Latest episode: #561 TonIO, a Multi-threaded Async Runtime for Python
How many cores does your machine have, 10, 18? Your async Python code uses just one of them. That isn't a bug in asyncio. That's the design, and optimizing event loops to be faster by 20% doesn't change it. So Giovanni Barillari started over. Joe is the creator of Granian, the Rust-based server that powers Talk Python. His new project is TonIO, an async runtime written from scratch for free-threaded Python. Real threads, a handful of primitives instead of asyncio's pile of them, and it flat out refuses to start if the GIL is on.
Upcoming episodes
How many files does your query read before it reads any data? On some data lakes, you go through JSON and metadata files first, just to learn which Parquet files matter. DuckLake asks one SQL question instead. The metadata lives in a real database. The data stays in plain Parquet. That's the entire format.
Pedro Holanda joined DuckDB in 2018, when it was still a research prototype at CWI. He's the lead DuckLake developer. Guillermo Sanchez Dionis works on DuckLake and the new Quack protocol.
With Quack as the catalog, DuckLake handles 200 transactions a second under heavy contention. No other open table format comes close.
Stay connected with Talk Python
Listen for Free
Add Talk Python to your favorite podcast player and never miss an episode.
Subscribe NowJoin the Newsletter
Get episode updates, Python news, and exclusive content delivered to your inbox.
Subscribe to NewsletterFeedback on the show
Take Python to the next level
Online courses from Talk Python. Real courses with real coding helping you build production-ready skills.
Training for teams
Looking to level up your entire team's Python skills? Talk Python Training offers bulk discounts for organizations, plus an admin dashboard to track team progress and completion.
Learn about team plans
From the creator of Talk Python
Python for Production
Learn how to build, deploy, and scale production-ready Python applications. From best practices to real-world patterns, this book covers everything you need to take your Python projects from prototype to production.
Wondering if we cover a topic?
Search across 560+ episodes to find exactly what you're looking for.
Search episodesTalk Python for your AI tools
560+ episodes, full transcripts, guests, and courses are available as live, structured data. Ask your AI assistant about the show, or pull it straight into your terminal and scripts.
MCP Server
Connect Claude, Cursor, or any MCP client to
talkpython.fm/api/mcp and get 12 tools
for searching episodes, reading transcripts, and browsing courses.
https://talkpython.fm/api/mcpCommand Line
No MCP support in your AI tool? The Talk Python CLI does the same job from a terminal, with text, JSON, or Markdown output ready to pipe into anything.
uv tool install talk-python-cli
talkpython episodes search "FastAPI"
Python Bytes Podcast
Do you enjoy Talk Python To Me? We created a second podcast to be the perfect counterpart to the long-form interview format.
Python Bytes delivers Python headlines directly to your earbuds in just 15-20 minutes per week. The topical items of the Python ecosystem, condensed and ready to go.
About the Show
Talk Python to Me is a weekly podcast covering a wide array of Python topics as well as many related technologies. Each episode features a casual 1-hour conversation with industry experts.
Have feedback for the show? We'd love to hear from you.
Suggest a show or guest
We are always on the look out for exciting topics to bring to you on Talk Python To Me. Do you have a great idea for a show? Know a dynamic Python personality who we should be speaking to?